CN205949565U - Sheet metal pre -bending machine - Google Patents

Abstract

The utility model provides a sheet material pre-bending machine, which is used for pre-bending or bending both ends of thicker sheet materials. Cylinders and other components, in which the fixed frame and the mobile frame are left-right symmetrical frame structures, the upper and lower hydraulic cylinders are fixed on the frame, the upper and lower molds are respectively connected with the piston rods in the upper and lower hydraulic cylinders, and the horizontal hydraulic pressure The cylinder is installed between the mobile frame and the fixed frame, which can push the mobile frame to move along the guide rail; when the piston rods in the upper and lower hydraulic cylinders are stretched out, they drive the upper and lower molds to move, thereby pressing the two ends of the sheet into a The required shape and size; the equipment can process both ends of the sheet at the same time, with high working efficiency and good forming effect. The distance between the racks can also be adjusted according to the length of the sheet, so that sheets of different lengths can be processed. The structure is simple and the operation is convenient. , low cost and high degree of automation.

Description

A sheet metal pre-bending machine

technical field

The utility model relates to the field of mechanical engineering processing, in particular to the pre-bending or bending of two ends of a relatively thick plate.

Background technique

In recent years, with the rapid development of industries such as coal, petrochemical, water conservancy and hydropower, metallurgy, and automobile manufacturing, the demand for sheet metal production of various shapes, specifications, and different precision requirements has also increased rapidly. Only the ends need to be bent, and some sheets need to be rolled into a tube. At present, the domestic cylindrical parts use plate rolling machines to roll the sheets. During the sheet rolling process, due to the gap between the lower rollers of the plate rolling machine, the two ends of the sheets cannot be rolled directly, and the sheets need to be rolled first. Both ends are pre-bent to form a circular arc that meets the requirements, and the pre-bending or bending at both ends of the sheet can be pre-bent through the end roll bender and the plate rolling machine itself. This kind of process is extensive and accurate. It is not high, and the pre-bending effect is poor; stamping equipment and presses can also be used for bending with molds, which is high in cost and complicated in operation; it can also be bent by CNC bending machines, but only thin plates and some small parts can be bent. The equipment is complicated and the cost is high. In addition, these existing equipment cannot process both ends of the sheet at the same time, only one end of the sheet can be processed, and the sheet needs to be turned around to process the other end. The operation is inconvenient and the work efficiency is low. It cannot be adjusted, the scope of use is small, and the degree of automation is low.

Contents of the invention

1. Solve technical problems

Aiming at the disadvantages of the above sheet metal pre-bending process and poor pre-bending effect, high cost, complicated operation, low efficiency, and small application range, the utility model provides a sheet metal pre-bending machine, which uses a bending die, through setting The hydraulic circuit can pre-bend or bend both ends of the thicker sheet at the same time, and the distance can be adjusted according to the length of the sheet. The structure is simple, the operation is convenient, the work efficiency is high, the bending effect is good, and the application range is wide.

2. Technical solution

The technical solution adopted by the utility model to solve its technical problems is: the utility model is mainly composed of a fixed frame, a mobile frame, an upper and a lower hydraulic cylinder, an upper and a lower mold, a horizontal hydraulic cylinder, guide rails and a workbench, wherein the fixed machine The frame and the mobile frame are left and right symmetrical structures, both of which are frame structures, which are composed of an upper beam, a base, and four columns. The base is composed of two channel steels on the left and right and two I-beams on the front and rear. structure, and a cover plate is welded on the frame, and the four columns are respectively welded on the upper beam and the base cover plate; two upper hydraulic cylinders and two lower hydraulic cylinders are respectively installed on the fixed frame and the mobile frame, and the upper and lower hydraulic cylinders are respectively installed. The lower hydraulic cylinder is arranged vertically and needs to be coaxial. A flange plate is welded on each of them, which are respectively connected to the upper beam and the base by bolts. In order to enhance the stability and reliability of the frame, the upper beam in the fixed frame Weld a corner plate on the two columns on the left side and on the upper beam and the right column of the mobile frame; two circular through holes are opened on the upper beam, and the piston rod in each upper hydraulic cylinder passes through the upper beam Each of the through holes in the hydraulic cylinder is connected to an upper mold, and the piston rod in each lower hydraulic cylinder is connected to a lower mold. The opposite surfaces of the upper mold and the lower mold are arc-shaped surfaces that can match each other; Composition, the guide rail seat and the lower slider are connected by screws, and the I-beam in the upper base of the mobile frame is connected to an upper slider by screws. The mobile frame can move along the guide rail to adapt to different lengths of sheets. Two connecting ears are also welded on the base for connecting with the piston rod in the horizontal hydraulic cylinder; There are two flanges, which are respectively connected to the base and the supporting base of the fixed frame by bolts, and the piston rod in the horizontal hydraulic cylinder is connected to the connecting ear on the base of the mobile frame through a pin; the workbench is fixed on the fixed frame and On the base in the mobile rack, the sheet is placed on the workbench.

When the piston rods in the upper and lower hydraulic cylinders are stretched out, the upper and lower molds are driven to move, thereby pressing the two ends of the sheet into the desired shape and size; when the size of the sheet is large, the piston in the horizontal hydraulic cylinder When the rod is stretched out, it will push the mobile frame to move along the guide rail; changing the shape of the upper and lower molds can realize the bending and forming of sheets of different specifications and sizes.

3. Beneficial effects of the utility model

The utility model can process both ends of the sheet material at the same time without turning around, thereby improving the work efficiency, and the forming effect is good. The distance between the racks can also be adjusted according to the length of the sheet material, so that sheets of different lengths and specifications can be processed, and the application range is wider. Large; in addition, the structure is simple, the operation is convenient, the work is stable and reliable, the cost is low, and the degree of automation is high.

Description of drawings

Figure 1 Schematic diagram of the pre-bending machine.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a sectional view along line A-A of Fig. 1 .

FIG. 4 is a partially enlarged view of FIG. 3 .

In the figure 1. Upper hydraulic cylinder, 2. Flange, 3. Upper beam, 4. Corner plate, 5. Upper mold, 6. Sheet material, 7. Lower mold, 8. Column, 9. Lower hydraulic cylinder, 10 .Flange plate, 11. Cover plate, 12. Base, 13. Workbench, 14. Fixed frame, 15. Mobile frame, 16. I-beam, 17. Guide rail seat, 18. Screw, 19. Up slide Block, 20. lower block, 21, 23. flange, 22. bearing seat, 24. horizontal hydraulic cylinder, 25. bearing pin, 26. connecting ear.

detailed description

In Fig. 1～4, the utility model is mainly by fixed frame (14), mobile frame (15), upper and lower hydraulic cylinder (1), (9), upper and lower mold (5), (7) , a hydraulic cylinder (23), a guide rail and a workbench (13), wherein the fixed frame (14) and the mobile frame (15) are left-right symmetrical structures, all of which are frame structures, which consist of an upper beam (3), a Base (12) and four upright columns (8) form, and base (12) is made up of two channel steels and front and rear I-beams (16) to form frame structure, welds a cover plate (11) on frame again, four The uprights (8) are respectively welded on the upper beam (3) and the cover plate (11) in the base (12); the fixed frame (14)) and the mobile frame (15)) are respectively equipped with two upper hydraulic pressure Cylinder (1) and two lower hydraulic cylinders (9), the upper and lower hydraulic cylinders (1), (9) are vertically arranged, and need to ensure coaxial, each welded with a flange (2), (10 ), are respectively connected with the cover plate (11) on the upper beam (3) and the base (12) by bolts, in order to enhance the stability and reliability of the frame, in the fixed frame (14) the upper beam (3) and On the left two columns (8) and on the upper beam (8) in the mobile frame (15) and on the right column (8) respectively weld an angle plate (4); on the upper beam (3) there are two round shaped through hole, the piston rod in each upper hydraulic cylinder (1) passes through the through hole of the upper crossbeam (3) to connect an upper die (5), and the piston rod in each lower hydraulic cylinder (9) connects to a The lower mold (7), the opposite surface of the upper mold (5) and the lower mold (7) are arc-shaped surface structures that can match each other; the guide rail is made up of a guide rail seat (17) and a lower slider (20), and the guide rail seat (17 ) and the lower slider (20) are connected by screws (18), and the I-beam (16) in the base (12) on the mobile frame (15) is connected with an upper slider (19) by screws (18), and the mobile The frame (15) can move along the middle and lower sliders (20) of the guide rail under the promotion of the horizontal hydraulic cylinder (24) to adapt to sheets of different lengths. On the left side of the base (12) in the mobile frame (15) Two connection lugs (26) are also welded on the top, for being connected with the piston rod in the horizontal hydraulic cylinder (24); The horizontal hydraulic cylinder (24) is installed between the mobile frame (15) and the fixed frame (14), It is used to push the mobile frame (15) to move along the guide rail. Two flanges (21) and (23) are welded on the horizontal hydraulic cylinder (24), which are connected to the middle base (12) of the fixed frame (14) by bolts respectively. Connect with support seat (22), the piston rod in horizontal hydraulic cylinder (24) is connected with connecting lug (26) in the mobile frame (15) by pin shaft (25); workbench (13) is fixed on fixed frame ( 14) and on the base (12) in the mobile frame (15), the sheet material (6) is placed on the workbench (13).

When the piston rods of (1) and (9) in the upper and lower hydraulic cylinders are stretched out, the upper and lower molds (5) and (7) are driven to move, thereby pressing the two ends of the sheet (6) into the desired shape and size; when the sheet material (6) size was bigger, the piston rod in the horizontal hydraulic cylinder (24) was stretched out, and the mobile frame (15) would be promoted to move along the guide rail; change the upper and lower dies (5), ( 7), it can realize the bending and forming of both ends of the sheet metal with different specifications and sizes.

Claims (1)

1. A sheet metal pre-bending machine is characterized in that it is mainly composed of a fixed frame, a mobile frame, upper and lower hydraulic cylinders, an upper and lower mold, a horizontal hydraulic cylinder, guide rails and a workbench, wherein the fixed frame, The mobile frame is a left-right symmetrical structure, all of which are frame structures, which are composed of an upper beam, a base, and four columns. The base is composed of two channel steels on the left and right and two I-beams on the front and rear. A cover plate is welded on the frame, and the four columns are respectively welded on the upper beam and the base cover plate. Two upper hydraulic cylinders and two lower hydraulic cylinders are respectively installed on the fixed frame and the mobile frame. The cylinders are arranged vertically and need to be coaxial. There is a flange plate welded on each of them, which are respectively connected to the upper beam and the base by bolts. A corner plate is welded on the beam and the right side column respectively; there are two circular through holes on the upper beam, and the piston rod in each upper hydraulic cylinder passes through the through hole of the upper beam to connect with an upper mold, and each lower hydraulic cylinder The piston rods in the cylinder are each connected to a lower mold, and the opposite surfaces of the upper mold and the lower mold are arc-shaped structures that can match each other; the guide rail is composed of a guide rail seat and a lower slider, and the guide rail seat and the lower slider are connected by screws. The I-beam in the upper base of the frame is connected to an upper slider by screws, and the mobile frame can move along the guide rail. Two connecting ears are welded on the base of the mobile frame for connecting with the piston rod in the horizontal hydraulic cylinder; The hydraulic cylinder is installed between the mobile frame and the fixed frame, and is used to push the mobile frame to move along the guide rail. There are two flanges welded on the horizontal hydraulic cylinder, which are respectively connected to the base and the supporting seat of the fixed frame by bolts. The piston rod in the horizontal hydraulic cylinder is connected to the connecting lug on the base of the mobile frame through the pin shaft; When the piston rod in the cylinder is stretched out, it drives the upper and lower molds to move, thereby pressing the two ends of the sheet into the required shape and size; when the size of the sheet is large, extend the piston rod in the horizontal hydraulic cylinder to It will push the mobile frame to move along the guide rail; changing the shape of the upper and lower molds can realize the bending and forming of the two ends of the sheet metal with different specifications and sizes.